Siri or the Search app can be used to look for movies and shows across apps on your Apple TV (4th generation). You can search by title, genre, actor, and more.
Here are the content providers currently supported by Universal Search:
● United States: Movies and TV shows in iTunes, ABC, A&E, Bravo, CBS, Comedy Central, Cooking Channel, Disney Channel, Disney Jr, Disney XD, DIY, E!, Food Network, FOXNOW, FXNOW, FYI, HBO GO, HBO NOW, HGTV, History, Hulu, Lifetime, MTV, Nat Geo TV, NBC, Netflix, PBS, PBS Kids, SHOWTIME, SHOWTIME Anytime, Starz, Syfy, Travel Channel, USA, VH1
● Australia, Canada, France, Germany, and United Kingdom: Movies and TV shows in iTunes, Netflix
● Other countries and regions: Movies in iTunes